Packing



F. H. FIELD Feb. 13, 1934,

PACKING Filed Nov. 3, 1930 Patented Fell). 13, 1934 PATE'r PACKING 1.Fletcher H. Field, Detroit, Mich., assignor to Rhodes Metallic PackingCompany, Detroit, Mich., a corporation of Michigan Application November3, 1930. Serial No. 493,201

4 Claims. (Cl. 154-455) This invention relates to packing and moreparticularly to improvement in core constructions for metallic shaft androd packings and the like.

The invention has as one o its primary objects to provide a metalliccore which is capable of being flexed longitudinally and compressedradially.

Another object of the invention is to provide a substantially tubularmetallic core inside of which a lubricating substance may be placed ifdesired.

The several objects, advantages and novel details of construction ofseveral forms of my invention will be made more apparent as thisdescription proceeds, especially when considered in connection with theaccompanying drawing, wherein Figure l is a sectional elevational viewof a packing having a core constructed in accordance with my invention;

Figure 2 is a transverse sectional View taken substantially on the planeindicated by line 2 2 in Figure 1;

Figure 3 is a sectional elevational View of a packing showing a modifiediorm of core;

Figure 4 is a transverse sectional view taken substantially on the planeindicated by line 4 4 in Figure 3;

Figure 5 is a sectional elevational View of a length of packing showingstill another modified form of core construction;

Figure 6 is a transverse sectional view taken substantially on the planeindicated by line 6 6 .35i in Figure 5;

Figure 7 is a sectional elevational view of a length of packing showinganother modified form of core construction, and

Figure 8 is a transverse sectional View taken substantially on the planeindicated by line 8 8 in Figure 7.

In Figure l there is illustrated a packing l0 having a core 1l extendinglongitudinally therethrough. The body or the packing l0 may have anouter protecting cover of exible material if desired. The body 10 may bemade of any preferred or desired material and in any preferred ordesired manner although advantageous results are obtained from a packingconstructed of metallic strips longitudinally interfolded and compressedin interlocking position. Such a packing has inherent resiliency and ifthe metallic strips are coated with oil or graphite or both,.

or some other lubricant, the packing becomes substantiauyse1r1ubricatmg- In accordance with the present invention, I proposeforming the core 11 in the form of a hollow tubular member produced bybraiding wire or ribbon in the manner clearly illustrated in Figures land 2. This produces a core which is longitudinally flexible andradially compressible, and the hollow interior of the core may ifdesired be supplied with graphite or oil or any other highly viscous orsemi-lubricant substance which will assist in making the packingself-lubricating. 35 The wire or ribbon from which the tubular core isbraided may be of magnesium, magnesium alloy, an alloy of copper andlead or of some other nonabrasive alloy having high heat resistingproperties.

In Figures 3 and 4 another form of construction is illustrated in whichthe core 12 is also in the form of a hollow tubular member constructedof a helically Wound ribbon of metal with the adjacent edges of theribbon interlocked in the form of the conventional electric wireconduit. As in the previously disclosed construction, this core membermay be made of any of the materials therein suggested, or of anysuitable material.

In Figures 5 and 6 the body 10 is shown as provided with a core 13 inthe form of a metallic bellows-like member or a tubular member providedwith successively arranged circumferential flutes. As in the previouslydescribed construction, this core member may be made of magnesium,magnesium alloy, an alloy of copper and lead or any other non-abrasivealloy capable of withstanding high temperature. The thickness of thewall of the core member will be such that the core member will becapable of being longitudinally flexed and slightly radially compressed.

In Figures 7 and 8 still another form of construction is illustrated inwhich the core comprises a plurality of metal Wires lll which extendlongitudinally of the core member and are arrangedv in a substantiallycylindrical group. These Wires may be embedded in graphite or oil, orany other highly viscous or semi-solid lubricant. The wires may be ofany of the alloys or material heretofore mentioned and will be spaced100 apart suiciently to permit of radial compression so that theresiliency of the packing will not be impaired.

Having thus described the several forms of my invention, what I claimis,-

l. A flexible metallic packing comprising a body and a tubular braidedcore extending longitudinally therethrough and constituting a lubricantreservoir.

2. A exble metallic packing comprising a 119 metallic stripslongitudinally interfolded and compressed in interlocking engagementwith each other, and a hollow core disposed substantially centrally ofsaid body and constituting a lubricant reservoir, said core being formedof metallic strips braided together.

FLETCHER H. FIELD.

